Pipe-wrench.



No. 784,771. 'PATENTED MAR. 14, 1905. J. ADAMS & O. A. GROSS.

PIPE WRENGH.

APPLIOATION FILED 0GT.18, 1904.

UNITED STATES Patented March 14, 1905.

PATENT OEEIcE.

JABEZ ADAMS AND CHARLES ALFRED CROSS, OF HAMILTON, VICTORIA, AUSTRALIA.

PIPE-WRENCH.

SPECIFICATION forming part of Letters Patent No. 784,771, dated March 14, 1905.

Application filed October 18, 190A. Serial No. 228,918.

To all who/1t it Jim/y concern:

Be it known that we, JABEZ ADAMS, residing at Glenmire, Thomson street, and CHARLES ALFRED CRoss, residing at Brown street, in the town of Hamilton, county of Dundas, State of Victoria, and'Comrnonwealth ofAustralia, subjects of the King of Great Britain and Ireland, have invented certain new and useful Improvements in Piperenches, of which the following is a specification.

The object of our invention is to provide a cheap and effective pipe-wrench which shall not only be quick in action, but also easily adjusted.

Referring to the drawings, which form a part of this specification, Figure l represents a side elevation of the stationary jaw and handle. Fig. 2 shows an end view of the said handle looked at in the direction of the arrow. Fig. 3 depicts an end elevation of the U-sectioned cam-shaped jaw and handle seen in Fig. 4. Fig. 4 represents a side elevation, partly in section, of the U-sectioned jaw and handle. Fig. 5 shows the stationary and U- sectioned handles in their normal position and a piece of pipe between the stationary and moving jaws.

Similar letters of reference indicate similar or corresponding parts where they occur in the several views.

On reference to the drawings it will be seen that A is the stationary jaw, and B the handle, to which it is integrally attached. At the outer end the handle is reduced to act as a screw-driver C. In the handle and on the side near the jaw are formed serrations D. The depth, pitch, and angle of these will depend upon conditions. On the inner face of the jaw are teeth E, the proportions of which will also vary.

Sliding upon the handle B. before referred to, is the U-sectioned handle F. This is preferably made from a piece of sheet metal the edges of which are folded together, and thereby form in section a U, as seen in Fig. 3. On one end of this handle are cam-shaped jaws, consisting of two legs V, which are provided with teeth E.

Between the legs of the U-sectioned handle and near the jaw is placed a bridge-piece G. This is secured thereto by two or more rivets H. Near the lower portion of this bridgepi'eee it is provided with a circumferential bearing J, against which a portion of a pawl hereinafter referred to bears.

Through the legs of the U-sectioned handle passes a pivot-pin K. Around this is pivoted the pivoting end of a pawl L. This pivoting end bears against the circumferential bearing J before referred to. The outer end of the pawl has a linger-hold M thereon, and intermediately situated between the pivot and linger-hold is a catch N. This catch engages with the serrations I). Also extending between the two legs of the U-sectioned handle is a cross-pin O. This retains intermediately in position a plate-spring P. spring bears against the bridge-piece and the other against the intermediate portion of the said pawl.

NVe do not bind ourselves to any particular way of securing the plate-spring T to the moving handle F. The teeth E'on both the jaws may in some instances be dispensed with.

The cycle of operations with our invention .is as follows: The jaws of the stationary and U-sectioned handles are separated, so that they will encompass the article to be locked. The U-sectioned handle is then pushed toward the said article till its jaw touches the same. pawl-catch then falls into one of the serrations on the stationary handle. The U-sectioned handle is then pulled toward the stationary handle and a vise-like grip is conveyed to the article. same, save that the linger-hold M has not to be pulled outwardly when the U-sectioncd handle requires to be drawn from the stationary handle.

Having now described our invention, what we claim as new, and desire to secure by Letters Patent, is-

1. In a wrench, the combination of a notched or serrated handle having a jaw on one end,

One end of this The In the modification the action is the 5 with a relatively adjustable handle slidable upon the first handle, and having depending jaws embracing the handle, a pawl pivoted between the aws adapted to engage the serrations on the first handle, a bridge-piece between the jaws against which the pawl bears to relieve its pivot of strain, and a spring to keep the pawl in engagement with the serrations of the handle, substantially as described.

2. In a wrench, the combination of a relatively stationary handle notched or serrated on its under side and having a jaw on one end; with a relatively adjustable handle U-shaped in cross-section to embrace the handle, the front end of said handle forming jaws opposite the lixed jaw, a bridge-piece secured between thejaws of the adjustable handle, a pawl pivoted between the jaws adapted to engage the serrations of the stationary handle, and a spring bearing against the bridge-piece and pawl and yielding-1y holding the latter in engagement with the serrations, for the purpose and substantially as described.

3. In an improved pipe-wrench a handle having an integral jaw at one end thereof, serrations in the said handle near the jaw and teeth on the inner face of the said jaw, in combination with a handle having at one end camshaped jaws consisting of two legs and provided with teeth, a bridge-piece between said legs, a pawl and a cross-pin between said legs, a plate-spring retained by said cross-pin, one end of the said plate-spring bearing against the bridge-piece and the outer against an intermediate portion of a pawl, all substantially as described.

4. The combination with the relatively fixed jaw and handle, of an adjustable handle having cam-shaped jaws on one end, a bridgepiece between the said jaws, a circumferential bearing upon said bridge-piece, a cross-pin between thejaws, a plate-spring intermediately .retained by said cross-pin, one end of said spring bearing against the bridge and the outer against a pawl, a pivot-pin between said legs, and a pawl pivoted to said pivot-pin, engaging teeth on the fixed jaw, substantially as and for the purpose described.

5. An improved pipe-wrench consisting of a stationary handle having serrations therein, and an integral jaw having teeth thereon, in combination with a handle U-shaped in crosssection having at one end cam-shaped jaws provided with teeth, a bridge-piece between said jaws, a circumferential bearing on said bridge-piece, a cross-pin between said jaws, a plate-spring one end of which bears against the bridge-piece and the other against a pawl, a pivot-pin between said legs, a pawl pivoted to said pivot-pin,said pawl having at the outer end a finger-hold and an intermediate catch, all substantially as described.

In witness whereof we have hereunto set our hands to this specification in the presence of two witnesses.

J ABEZ ADAMS. 7 CHARLES ALFRED CROSS. Witnesses:

GEORGE MAs'rERs GOULD, HENRY WALTER DREX. 

